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<div class="title">S110_nRF51822/Source/ble/app_scheduler.c</div>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * The information contained herein is property of Nordic Semiconductor ASA.</span>
<a name="l00004"></a>00004 <span class="comment"> * Terms and conditions of usage are described in detail in NORDIC</span>
<a name="l00005"></a>00005 <span class="comment"> * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensees are granted free, non-transferable use of the information. NO</span>
<a name="l00008"></a>00008 <span class="comment"> * WARRANTY of ANY KIND is provided. This heading must NOT be removed from</span>
<a name="l00009"></a>00009 <span class="comment"> * the file.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * $LastChangedRevision$</span>
<a name="l00012"></a>00012 <span class="comment"> */</span>
<a name="l00013"></a>00013 
<a name="l00014"></a>00014 <span class="preprocessor">#include &quot;<a class="code" href="app__scheduler_8h.html">app_scheduler.h</a>&quot;</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00016"></a>00016 <span class="preprocessor">#include &lt;stdint.h&gt;</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include &quot;nrf_soc.h&quot;</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include &quot;<a class="code" href="nrf__assert_8h.html" title="Utilities for verifying program logic.">nrf_assert.h</a>&quot;</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include &quot;<a class="code" href="ble__sdk__util_8h.html">ble_sdk_util.h</a>&quot;</span>
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 
<a name="l00024"></a>00024 <span class="keyword">typedef</span> <span class="keyword">struct </span>
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026     <a class="code" href="group__app__scheduler.html#ga30ec1fc5e48b1481da4f6ca2b24f9aef" title="Scheduler event handler type.">app_sched_event_handler_t</a> handler;                      
<a name="l00027"></a>00027     app_sched_event_data_t    data;                         
<a name="l00028"></a>00028 } app_sched_event_t;
<a name="l00029"></a>00029 
<a name="l00036"></a>00036 <span class="keyword">typedef</span> <span class="keyword">struct</span>
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038     app_sched_event_t queue_data[APP_SCHED_QUEUE_SIZE + 1]; 
<a name="l00039"></a>00039     uint8_t           start;                                
<a name="l00040"></a>00040     uint8_t           end;                                  
<a name="l00041"></a>00041 } app_sched_queue_t;
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="keyword">static</span> <span class="keyword">volatile</span> app_sched_queue_t s_app_sched_queue[APP_SCHED_QUEUE_NUM];
<a name="l00044"></a>00044 
<a name="l00046"></a>00046 <span class="preprocessor">#define NEXT_INDEX(INDEX)\</span>
<a name="l00047"></a>00047 <span class="preprocessor">    (((INDEX) + 1) % (APP_SCHED_QUEUE_SIZE + 1))</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00050"></a>00050 <span class="preprocessor">#define APP_SCHED_QUEUE_FULL(queue_id)\</span>
<a name="l00051"></a>00051 <span class="preprocessor">    (NEXT_INDEX(s_app_sched_queue[queue_id].end) == s_app_sched_queue[queue_id].start)</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00054"></a>00054 <span class="preprocessor">#define APP_SCHED_QUEUE_EMPTY(queue_id)\</span>
<a name="l00055"></a>00055 <span class="preprocessor">    (s_app_sched_queue[queue_id].end == s_app_sched_queue[queue_id].start)</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span>
<a name="l00057"></a>00057 
<a name="l00058"></a><a class="code" href="group__app__scheduler.html#ga62e8131bc306582c34e1db7565f08a81">00058</a> <span class="keywordtype">void</span> <a class="code" href="group__app__scheduler.html#ga62e8131bc306582c34e1db7565f08a81" title="Initializes the Scheduler.">app_sched_init</a>(<span class="keywordtype">void</span>)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060     uint32_t i;
<a name="l00061"></a>00061     
<a name="l00062"></a>00062     <span class="keywordflow">for</span> (i = 0; i &lt; APP_SCHED_QUEUE_NUM; i++)
<a name="l00063"></a>00063     {
<a name="l00064"></a>00064         s_app_sched_queue[i].end   = 0;
<a name="l00065"></a>00065         s_app_sched_queue[i].start = 0;
<a name="l00066"></a>00066     }
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 
<a name="l00076"></a>00076 <span class="keyword">static</span> uint32_t app_sched_event_get(app_sched_event_t * p_event, uint8_t queue_id)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078     uint32_t ret_status = <a class="code" href="group__nrf__error.html#ga349d25ada15be023e0d507f45ada682c" title="Not found.">NRF_ERROR_NOT_FOUND</a>;
<a name="l00079"></a>00079 
<a name="l00080"></a>00080     <span class="keywordflow">if</span>(!APP_SCHED_QUEUE_EMPTY(queue_id))
<a name="l00081"></a>00081     { 
<a name="l00082"></a>00082         <span class="keyword">volatile</span> app_sched_queue_t * p_queue = &amp;s_app_sched_queue[queue_id];
<a name="l00083"></a>00083         
<a name="l00084"></a>00084         <a class="code" href="group__ble__sdk__lib__util.html#ga61149a977f6ebdaeb8bdeed626dd9392" title="Macro for entering a critical region.">CRITICAL_REGION_ENTER</a>();
<a name="l00085"></a>00085 
<a name="l00086"></a>00086         *p_event = p_queue-&gt;queue_data[p_queue-&gt;start];
<a name="l00087"></a>00087         p_queue-&gt;start = NEXT_INDEX(p_queue-&gt;start);
<a name="l00088"></a>00088 
<a name="l00089"></a>00089         <a class="code" href="group__ble__sdk__lib__util.html#ga854878240b628e978f760f75aca4e1cc" title="Macro for leaving a critical region.">CRITICAL_REGION_EXIT</a>();
<a name="l00090"></a>00090 
<a name="l00091"></a>00091         ret_status = <a class="code" href="group__nrf__error.html#ga7e6367efeaac363d8cf024940b4ec123" title="Successful command.">NRF_SUCCESS</a>;
<a name="l00092"></a>00092     }
<a name="l00093"></a>00093 
<a name="l00094"></a>00094     <span class="keywordflow">return</span> ret_status;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 
<a name="l00097"></a>00097 
<a name="l00098"></a><a class="code" href="group__app__scheduler.html#ga6fd6a3db7526418f796c55c096360ded">00098</a> <span class="keywordtype">void</span> <a class="code" href="group__app__scheduler.html#ga6fd6a3db7526418f796c55c096360ded" title="Executes all scheduled events.">app_sched_schedule</a>(<span class="keywordtype">void</span>)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100     <span class="keyword">static</span> app_sched_event_t this_event;
<a name="l00101"></a>00101     uint8_t                  this_queue_id = 0;
<a name="l00102"></a>00102 
<a name="l00103"></a>00103     <span class="comment">// Check queues (lowest id is highest priority)</span>
<a name="l00104"></a>00104     <span class="keywordflow">while</span> (this_queue_id &lt; APP_SCHED_QUEUE_NUM)
<a name="l00105"></a>00105     {
<a name="l00106"></a>00106         <span class="comment">// Get next event from this_queue (if any), and execute handler</span>
<a name="l00107"></a>00107         <span class="keywordflow">while</span> ((app_sched_event_get(&amp;this_event, this_queue_id) == <a class="code" href="group__nrf__error.html#ga7e6367efeaac363d8cf024940b4ec123" title="Successful command.">NRF_SUCCESS</a>))
<a name="l00108"></a>00108         {
<a name="l00109"></a>00109             this_event.handler(&amp;this_event.data);
<a name="l00110"></a>00110             this_queue_id = 0;
<a name="l00111"></a>00111         }
<a name="l00112"></a>00112 
<a name="l00113"></a>00113         <span class="comment">// No more events in current queue, check next queue</span>
<a name="l00114"></a>00114         this_queue_id++;
<a name="l00115"></a>00115     }
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 
<a name="l00118"></a>00118 
<a name="l00119"></a><a class="code" href="group__app__scheduler.html#gaaecab81ed0f2e9c1ce56586367b93dc5">00119</a> uint32_t <a class="code" href="group__app__scheduler.html#gaaecab81ed0f2e9c1ce56586367b93dc5" title="Schedules an event.">app_sched_event_put</a>(app_sched_event_data_t *  p_data,
<a name="l00120"></a>00120                              <a class="code" href="group__app__scheduler.html#ga30ec1fc5e48b1481da4f6ca2b24f9aef" title="Scheduler event handler type.">app_sched_event_handler_t</a> handler,
<a name="l00121"></a>00121                              uint8_t                   queue_id)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123     uint32_t ret_status = <a class="code" href="group__nrf__error.html#ga7ef4d466b79b31c6325f8b7af5d4f75f" title="No Memory for operation.">NRF_ERROR_NO_MEM</a>;
<a name="l00124"></a>00124 
<a name="l00125"></a>00125     <span class="keywordflow">if</span> (queue_id &lt; APP_SCHED_QUEUE_NUM)
<a name="l00126"></a>00126     {
<a name="l00127"></a>00127         <span class="keywordflow">if</span> (!APP_SCHED_QUEUE_FULL(queue_id))
<a name="l00128"></a>00128         {
<a name="l00129"></a>00129             <span class="keyword">volatile</span> app_sched_queue_t * p_queue = &amp;s_app_sched_queue[queue_id];
<a name="l00130"></a>00130             
<a name="l00131"></a>00131             <a class="code" href="group__ble__sdk__lib__util.html#ga61149a977f6ebdaeb8bdeed626dd9392" title="Macro for entering a critical region.">CRITICAL_REGION_ENTER</a>();
<a name="l00132"></a>00132             
<a name="l00133"></a>00133             p_queue-&gt;queue_data[p_queue-&gt;end].handler = handler;
<a name="l00134"></a>00134             p_queue-&gt;queue_data[p_queue-&gt;end].data    = *p_data;
<a name="l00135"></a>00135             p_queue-&gt;end                              = NEXT_INDEX(p_queue-&gt;end);
<a name="l00136"></a>00136             
<a name="l00137"></a>00137             <a class="code" href="group__ble__sdk__lib__util.html#ga854878240b628e978f760f75aca4e1cc" title="Macro for leaving a critical region.">CRITICAL_REGION_EXIT</a>();
<a name="l00138"></a>00138 
<a name="l00139"></a>00139             ret_status = <a class="code" href="group__nrf__error.html#ga7e6367efeaac363d8cf024940b4ec123" title="Successful command.">NRF_SUCCESS</a>;
<a name="l00140"></a>00140         }
<a name="l00141"></a>00141     }
<a name="l00142"></a>00142     <span class="keywordflow">else</span>
<a name="l00143"></a>00143     {
<a name="l00144"></a>00144         ret_status = <a class="code" href="group__nrf__error.html#ga0a5831cf5092e0dd43a01869676ee076" title="Invalid Parameter.">NRF_ERROR_INVALID_PARAM</a>;
<a name="l00145"></a>00145     }
<a name="l00146"></a>00146 
<a name="l00147"></a>00147     <span class="keywordflow">return</span> ret_status;
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 
<a name="l00150"></a>00150 
<a name="l00151"></a>00151 <span class="keyword">static</span> <span class="keywordtype">void</span> app_sched_timeout_evt_handler(app_sched_event_data_t * p_ev_data)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153     (*p_ev_data-&gt;data.timer.timeout_handler)(p_ev_data-&gt;data.timer.timer_id);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 
<a name="l00156"></a>00156 
<a name="l00157"></a><a class="code" href="group__app__scheduler.html#gad09181e10ae224ca354b5e650b5e3a0a">00157</a> uint32_t <a class="code" href="group__app__scheduler.html#gad09181e10ae224ca354b5e650b5e3a0a" title="Schedules a timer event.">app_sched_timer_event_schedule</a>(app_timer_id_t              timer_id,
<a name="l00158"></a>00158                                         <a class="code" href="group__app__timer.html#ga0586b27407494731cad5b72b12aa5bfe" title="Application timeout handler type.">app_timer_timeout_handler_t</a> timeout_handler,
<a name="l00159"></a>00159                                         uint8_t                     priority)
<a name="l00160"></a>00160 {
<a name="l00161"></a>00161     app_sched_event_data_t ev_dat;
<a name="l00162"></a>00162     
<a name="l00163"></a>00163     <span class="keywordflow">if</span> (priority &gt;= APP_SCHED_QUEUE_NUM)
<a name="l00164"></a>00164     {
<a name="l00165"></a>00165         priority = APP_SCHED_QUEUE_NUM - 1;
<a name="l00166"></a>00166     }
<a name="l00167"></a>00167 
<a name="l00168"></a>00168     ev_dat.event_id                   = APP_SCHED_EVENT_TIMER;
<a name="l00169"></a>00169     ev_dat.data.timer.timer_id        = timer_id;
<a name="l00170"></a>00170     ev_dat.data.timer.timeout_handler = timeout_handler;
<a name="l00171"></a>00171     
<a name="l00172"></a>00172     <span class="keywordflow">return</span> <a class="code" href="group__app__scheduler.html#gaaecab81ed0f2e9c1ce56586367b93dc5" title="Schedules an event.">app_sched_event_put</a>(&amp;ev_dat, app_sched_timeout_evt_handler, priority);
<a name="l00173"></a>00173 }
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